Mexican officials say that they have found another mass grave in the northern state of Durango

Police discovered 30 bodies in a residential area of Durango city. The discovery comes as forensic experts continued to try and identify the remains of 145 people buried in mass graves in northern Tamaulipas. The northern states are at the center of a violent battle between rival drug gangs for control of lucrative smuggling routes. Durango state prosecutor Ramiro Ortiz Aguirre said that the search for more bodies was continuing. He said that the morgue was running out of space to store the bodies and asked for help providing extra refrigerated space. Forensic experts said that the bodies were in an advanced state of decomposition. Durango is in an area where the powerful Sinaloa drugs cartel operates. The cartel is led by Joaquin "Shorty" Guzman, the most wanted man in Mexico.